Bump minimum required Go version to 1.18, test using 1.19

Drop build tags from _fuzz.go as they're no longer required.

Signed-off-by: Timo Beckers <timo@isovalent.com>

.semaphore/semaphore.yml

@@ -23,10 +23,10 @@ blocks:
       prologue:
         commands:
           - sudo sh -c 'swapoff -a && fallocate -l 2G /swapfile && chmod 0600 /swapfile && mkswap /swapfile && swapon /swapfile'
-          - sudo mkdir -p /usr/local/golang/1.18 && curl -fL "https://go.dev/dl/go1.18.linux-amd64.tar.gz" | sudo tar -xz -C /usr/local/golang/1.18
-          - sem-version go 1.18
+          - sudo mkdir -p /usr/local/golang/1.19 && curl -fL "https://go.dev/dl/go1.19.linux-amd64.tar.gz" | sudo tar -xz -C /usr/local/golang/1.19
+          - sem-version go 1.19
           - export PATH="$PATH:$(go env GOPATH)/bin"
-          - curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.45.0
+          - curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.48.0
           - go install gotest.tools/gotestsum@v1.8.1
           - checkout
           - cache restore
@@ -61,7 +61,7 @@ blocks:
           - cache store
       - name: Run unit tests on previous stable Go
         commands:
-          - sem-version go 1.17
+          - sem-version go 1.18
           - go test -v ./cmd/bpf2go -run TestRun
           - gotestsum --raw-command --ignore-non-json-output-lines --junitfile junit.xml -- ./run-tests.sh $CI_MAX_KERNEL_VERSION -short -count 1 -json ./...
       - name: Run unit tests

btf/fuzz_test.go

@@ -1,6 +1,3 @@
-//go:build go1.18
-// +build go1.18
-
 package btf
 
 import (

fuzz_test.go

@@ -1,6 +1,3 @@
-//go:build go1.18
-// +build go1.18
-
 package ebpf
 
 import (

go.mod

@@ -1,6 +1,6 @@
 module github.com/cilium/ebpf
 
-go 1.17
+go 1.18
 
 require (
 	github.com/frankban/quicktest v1.14.0